Portable trimming device



Aug. '16, 1932 s..,1. HADDAD 7 1,371,606

' PORTABLE TRIMMING DEVICE meduune 10. 1930 Patented 16, 1932 4Application filed June .10,

,{Ilhis invention relates to. a portable trimming-deyice that can bevused for cutting and trimming hedges. and v for. similar purposes .1whenein a -continuously driven circular saw 5 isiemployed'and combinedwith other parts,- as hereinafter; described, enabling the device tobecontinuously movedalong a hedge to be trim ned'yin. such a manner thatthe twlgs will o beprogressively fed to the saw, cut and 19 thrown clearoithe device without clogging orjamming. i

Among the objects ofthls lnventionare the production of a trimmingdevice comprising. asmall number. of parts which are. of

- ierred embodiment of the invention. The

30 disclosure, however, isto'be considered as nie'rely illustratiwi ofthe principles of the invention. i

In the drawing: v Fig. 1 is a perspectiyeview of a trimming of Fig. 2,and

tooth of the saw.

As shown in Figs. 1 and 2. the device comprises a body portion A whichis provided with a lug 5 to which a split handle holder 6, of usualconstruction, may be adjustably secured by well known means so that theandcviceconstructed in accordance with the Fig. 3 is a vertical sectionon the line 35-3,

' Fig. 4: is an enlarged detailed viewoi a" semen a. mongo warranty, newJERSEY roa'mmua mmmmo Device, I

198. 0. Serial sitc m.

gular positionof the handle with respect to the bodyfportion'A maybe'adjusted to suit therequirements.

The body portion A is provided with a vertical circular flange7-,"Figfsi 1 and 3, adapted to snugly receive the reduced end 8 of themotor casing 9. The leads supplying cur rent to the motor may extend outthrou h the holder 6 andthrough the'handle 10. s well understood,'aswitch may be mounted on the handle for'closing and opening the circuit to the motor. The motor casing is'prefer'ably secured to the flange7 by screws 11 as [indicated in Figs. .1 and 3; By the provi- V -'sio'nof these means a motormay be readily attached'to or detached from thebody portion A, and" when attached itwill be held so- -.curely' inposition with'respect to the body portionA. i The projecting end of thecommutator shaft of the motor, is preferably threaded to receive ascrew'bolt 15 by means ot'which a circular saw '16 may be secured to theshaft.

This saw is preferably, provided with teeth 17 ,as shown in Fig.4'indetail, which are pro'videdwith cutting edges on each side so that thesaw plate may bereversed as conditions may-require. As shown in Fig; 4,one edgerof the saw tooth extends substan tially radially of the saw;while the other edge of the saw tooth extends obliquely at [any suitableangle as shown;

The saw rotates in a clockwise direction as indicated in Fig. 2, and forcutting new 7 growth on ahedge it is preferableto'mount f the saw asshown in this figure so that the 7 longer edges of the teeth will do thecutting.

Ifit is desiredto cut old growth it is preferv able to reverse the sawso that the edges,

which extend substantially radially of" the 0 saw-will do the cutting; y

As shown in Figs. '1 and 3, the'bodyportion A comprises a bell-shaped.orconical pom tion 18 whichprovides a space between'the motor and sawto prevent clogging or jam ining at this point Surrounding thisbellshaped portion is an interrupted circular portion 19v which acts asa guard for the saw.- Formed along the outer edge of this circular o0portion are depending lugs 20. certain of ing a guard plate 21, Figsu-2;and 3, from the circular portion 19 to provide an operating if sodesired.

space for the periphery of "the saw. The guard plate 21 is referablysecured to the pending lugs 20 y screws, as shown. Asv

indicated in Fig. 2 the guard plate 21 may be provided with lugs 22which, together with lugs 23, formed on the member 19 also act as guardsfor the saw. The spaces provided between the guard plate 21r and thecircular portion 19 and the lugs 20, 22-and 23 facilitate the ejectionof finely out material that may be carried into the space between thecircular portion 19 and the guard 2-1, and thus prevent clogging andjamming of the saw. To further facilitat'e'ithe ejection of finely cutmaterial that may: be carried into the bell-shaped portion 18,th'e sawis preferably provided with apertures 24, such as shown in Fig.2. 1 g

As shown in Figs. 1, 2 and 3 thecircul'ar portion 19 is provided with aflan e 25 upon which the lugs 23 may be formed. his flange projectsbelow the plane of the saw. Parts 19, 20, 21, 22 and 23 maybe madeintegral The forward end of the body portion A, at the point where theflange 19Lis interrupted, may be provided as ShOWIlzlIl Fig. 1 withguard teeth 26 which be may extended over the body portion A, asshow-n,-1n order to provide strong guard teeth and to permit of the useof narrow teeth. As shown, one edge of each of these teeth issubstantially straight and the corresponding edgesof all of these teethextend substantially parallel to each other as indicated in Fi 2.: Theother edges of the teeth are prefera ly curved and generally extend atan angle to the first mentioned edges so that the material to be cutWlll be bent in the direction of the movement of the saw, thusfacilitating the cutting of the 'material.

The circular portion 19 is preferably provided with a pivot lug 28, Fig.1, upon which a guide plate 29, Figs. '1, 2 and 3, may be pivotallymounted. The guide plate is provided with a shoulder 30 which in theopen position of the plate abuts against the flange 25 depending fromthe circular portion 19. By means of the butterfly nut shown in Fig. lthe guide plate 29 may be held in open position as indicated in fulllines in Fig. 2, or in the closed position in which it acts as a guardas indicated in broken lines in Fig. 2. In the open position shown inFig. 2 the guide acts as a means for separating or parting the hedge,and its inner edgeextends substantially parallel to the straight edgesof the guard teeth 26. The rear portion of the inner edge of the plateis provided with teeth, as shown, which prevent the hedge from beingpushed forwardly as the knife is rotated.

As shown in Fig. 2, the guide bar 29 is made comparatively wide so thatit may be used as, a guide and ma be moved along the top of the hedgethat as been trimmed to assist in guiding the device to out any twigsthat may be projecting and which were left uncut during the firsttrimming operation.

The body portion may be provided with braces 27, as shown in Fig. 1,connected to the flange 7 and extending to the circular portion 19.

The device disclosed includes provision for preventing clogging andjamming of the saw and for the ejection of finely cut material that mayget behind the saw, or the saw and the portions 19 and 21. By. securingthe handle holder to the body portion A it is possible to provide meansfor readily detaching the motor for repair or oiling whenever necessary.By locating the guard teeth, as shown, above the cutter and forming themon the plate A it is possible to make these teeth of any height to getthe required strength without interfering with the trimming operation.By constructin the teeth of the saw as described, either 0? the edges ofthe teeth may be'used for cutting as conditions require.

While one form of the invention has been 1 shown and described withparticularity it'is to be understoodthat the various novel featuresshown and described may be varied as to form, and that the expressionsused in the description and the claims are wordsof description and notwords of limitation.

her located near the periphery of the saw, the

saw having teeth with both side edges sharpened, one s1de edge beingsubstantially radial and the other side edge running-obliquely, said sawbeing reversible so as to cut selectively with either of said sideedges.

2. A trimming device including a circular saw, a plate-like membersubstantially parallel to and slightly spaced from said saw, aninterrupted circular guard member overlying the opposite face of the sawand secured to the first member, a series of guard fin ers on one ofsaid members located peripherally with respect to the saw and in theinterrupted portion of said guard member, and a guide member pivoted tosaid plate-like member so that it may be swung into overlapping positionwith respect to the portion of the periphry of the saw left exposed bythe guard member.

3. A trimming device including a circular saw, and a plate-like memberprovided with .an annular portion substantially parallel to member, saidsaw being rovided with openings therein to permit t e ejection oftrimmings therethrough from the space between the plate-like member andthe saw.

4. In a trimming device the'combination of a frame member, a circularsaw, and an interrupted annular channel member rigid with theframefmember and embracing the periphe of the saw, said annular channelmember ing provided with apertures opening radially and downwardly andlying bea low the plane of the saw. I

5. In a trimming device the combination of a frame member, a handle onthe frame member, a motor mounted on the frame member a circular sawdriven by said motor, an ard teeth formed on said frame member andextending beyond the periphery of the frame member and the saw, one sideof each guard tooth-being substantially straight and correspondingstraight sides of the guard teeth extending substantiall parallel to the.1

direction of movement of t e trimming device when in use, the other sideedges of the i 95 guard teeth extending at an angle to the firstmentioned sides of the guard teeth and in the direction of the movementof the saw.

6. In a trimming device the combination of a frame member, guard teethon the forward 39 side ofthe frame member, and a guide member pivoted onsaid frame member adapted when in open position to part the material tobe cut and when in its closed position to provide a guard for a portionof the saw opposite the guard teeth.

7 In a trimming device the combination of a frame member, guard teeth onthe forward side of the frame member, a guide member pivoted on saidframe member adapted when in 0 en position to part the material to becut an when in its closed position to provide a guard for a portion ofthe saw oppo= site the guard teeth, and means for limiting the openingmovement of the guide member in a position substantially parallel to thei guard teeth. i 8. In a trimming device the combination of a framemember a handle secured to the frame n1ember, a circular saw spaced from59 said frame member, and guard teeth formed on one side of said framemember and extending beyond the eriphery of the saw, said guard teethbeing re atively narrow and relatively high, the upper portion of theguard teeth being continued over the frame memher and being rigidtherewith In testimony whereof I have signed my name to thisspecification. w SALEEM J. HADDAD.

